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#
# BackwardMacros.cmake
# Copyright 2013 Google Inc. All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
###############################################################################
# OPTIONS
###############################################################################
set(STACK_WALKING_UNWIND TRUE CACHE BOOL
"Use compiler's unwind API")
set(STACK_WALKING_BACKTRACE FALSE CACHE BOOL
"Use backtrace from (e)glibc for stack walking")
set(STACK_DETAILS_AUTO_DETECT TRUE CACHE BOOL
"Auto detect backward's stack details dependencies")
set(STACK_DETAILS_BACKTRACE_SYMBOL FALSE CACHE BOOL
"Use backtrace from (e)glibc for symbols resolution")
set(STACK_DETAILS_DW FALSE CACHE BOOL
"Use libdw to read debug info")
set(STACK_DETAILS_BFD FALSE CACHE BOOL
"Use libbfd to read debug info")
set(BACKWARD_TESTS FALSE CACHE BOOL "Enable tests")
###############################################################################
# CONFIGS
###############################################################################
if (${STACK_DETAILS_AUTO_DETECT})
include(FindPackageHandleStandardArgs)
# find libdw
find_path(LIBDW_INCLUDE_DIR NAMES "elfutils/libdw.h" "elfutils/libdwfl.h")
find_library(LIBDW_LIBRARY dw)
set(LIBDW_INCLUDE_DIRS ${LIBDW_INCLUDE_DIR} )
set(LIBDW_LIBRARIES ${LIBDW_LIBRARY} )
find_package_handle_standard_args(libdw DEFAULT_MSG
LIBDW_LIBRARY LIBDW_INCLUDE_DIR)
mark_as_advanced(LIBDW_INCLUDE_DIR LIBDW_LIBRARY)
# find libbfd
find_path(LIBBFD_INCLUDE_DIR NAMES "bfd.h")
find_path(LIBDL_INCLUDE_DIR NAMES "dlfcn.h")
find_library(LIBBFD_LIBRARY bfd)
find_library(LIBDL_LIBRARY dl)
set(LIBBFD_INCLUDE_DIRS ${LIBBFD_INCLUDE_DIR} ${LIBDL_INCLUDE_DIR})
set(LIBBFD_LIBRARIES ${LIBBFD_LIBRARY} ${LIBDL_LIBRARY})
find_package_handle_standard_args(libbfd DEFAULT_MSG
LIBBFD_LIBRARY LIBBFD_INCLUDE_DIR
LIBDL_LIBRARY LIBDL_INCLUDE_DIR)
mark_as_advanced(LIBBFD_INCLUDE_DIR LIBBFD_LIBRARY
LIBDL_INCLUDE_DIR LIBDL_LIBRARY)
if (LIBDW_FOUND)
LIST(APPEND _BACKWARD_INCLUDE_DIRS ${LIBDW_INCLUDE_DIRS})
LIST(APPEND BACKWARD_LIBRARIES ${LIBDW_LIBRARIES})
set(STACK_DETAILS_DW TRUE)
set(STACK_DETAILS_BFD FALSE)
set(STACK_DETAILS_BACKTRACE_SYMBOL FALSE)
elseif(LIBBFD_FOUND)
LIST(APPEND _BACKWARD_INCLUDE_DIRS ${LIBBFD_INCLUDE_DIRS})
LIST(APPEND BACKWARD_LIBRARIES ${LIBBFD_LIBRARIES})
set(STACK_DETAILS_DW FALSE)
set(STACK_DETAILS_BFD TRUE)
set(STACK_DETAILS_BACKTRACE_SYMBOL FALSE)
else()
set(STACK_DETAILS_DW FALSE)
set(STACK_DETAILS_BFD FALSE)
set(STACK_DETAILS_BACKTRACE_SYMBOL TRUE)
endif()
else()
if (STACK_DETAILS_DW)
LIST(APPEND BACKWARD_LIBRARIES dw)
endif()
if (STACK_DETAILS_BFD)
LIST(APPEND BACKWARD_LIBRARIES bfd dl)
endif()
endif()
macro(map_definitions var_prefix define_prefix)
foreach(def ${ARGN})
if (${${var_prefix}${def}})
LIST(APPEND BACKWARD_DEFINITIONS "${define_prefix}${def}=1")
else()
LIST(APPEND BACKWARD_DEFINITIONS "${define_prefix}${def}=0")
endif()
endforeach()
endmacro()
if (NOT BACKWARD_DEFINITIONS)
map_definitions("STACK_WALKING_" "BACKWARD_HAS_" UNWIND BACKTRACE)
map_definitions("STACK_DETAILS_" "BACKWARD_HAS_" BACKTRACE_SYMBOL DW BFD)
endif()
foreach(def ${BACKWARD_DEFINITIONS})
message(STATUS "${def}")
endforeach()
find_path(BACKWARD_INCLUDE_DIR backward.hpp PATHS ${CMAKE_CURRENT_LIST_DIR})
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Backward
REQUIRED_VARS
BACKWARD_INCLUDE_DIR
BACKWARD_LIBRARIES
)
list(APPEND _BACKWARD_INCLUDE_DIRS ${BACKWARD_INCLUDE_DIR})
macro(add_backward target)
target_include_directories(${target} PRIVATE ${_BACKWARD_INCLUDE_DIRS})
set_property(TARGET ${target} APPEND PROPERTY COMPILE_DEFINITIONS ${BACKWARD_DEFINITIONS})
set_property(TARGET ${target} APPEND PROPERTY LINK_LIBRARIES ${BACKWARD_LIBRARIES})
endmacro()
set(BACKWARD_INCLUDE_DIRS ${_BACKWARD_INCLUDE_DIRS} CACHE INTERNAL "_BACKWARD_INCLUDE_DIRS")
set(BACKWARD_DEFINITIONS ${BACKWARD_DEFINITIONS} CACHE INTERNAL "BACKWARD_DEFINITIONS")
set(BACKWARD_LIBRARIES ${BACKWARD_LIBRARIES} CACHE INTERNAL "BACKWARD_LIBRARIES")
mark_as_advanced(_BACKWARD_INCLUDE_DIRS BACKWARD_DEFINITIONS BACKWARD_LIBRARIES)
if (NOT TARGET Backward::Backward)
add_library(Backward::Backward INTERFACE IMPORTED)
set_target_properties(Backward::Backward PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${_BACKWARD_INCLUDE_DIRS}"
INTERFACE_LINK_LIBRARIES "${BACKWARD_LIBRARIES}"
INTERFACE_COMPILE_DEFINITIONS "${BACKWARD_DEFINITIONS}"
)
endif()
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